rm unused import from zcbuildout state

salt/states/zcbuildout.py:41: [W0611(unused-import), ] Unused import re
modules.lvs: use alias to avoid shadowing `list` built-in type

salt/modules/lvs.py:353: [W0622(redefined-builtin), list] Redefining built-in 'list'
cp mod: honor `env` argument in list_master() & hash_file()

************* Module salt.modules.cp
salt/modules/cp.py:441: [W0613(unused-argument), list_master] Unused argument 'env'
salt/modules/cp.py:548: [W0613(unused-argument), hash_file] Unused argument 'env'
make zcbuildout._Logger a new-style class

salt/modules/zcbuildout.py:106: [C1001(old-style-class), _Logger] Old-style class defined.
First-pass unit test coverage for the Postgres execution module.
Merge pull request #8997 from hulu/lvs-list-alias

modules.lvs: use alias to avoid shadowing `list` built-in type
Refactor to no longer shadow built-ins of min and max
Merge pull request #9009 from cachedout/#8972

Refactor to no longer shadow built-ins of min and max
Merge pull request #9004 from makinacorpus/buildout-fixes

buildout fixes from 996c7950ccca49567693b890f37f113a227fff80
Merge pull request #9007 from cachedout/postgres-unit-tests

First-pass unit test coverage for the Postgres execution module.
Merge pull request #9003 from cvrebert/patch-2

make zcbuildout._Logger a new-style class
Merge pull request #8999 from hulu/cp-env

cp mod: honor `env` argument in list_master() & hash_file()
Fix misleading message
Merge pull request #9016 from techhat/typo

Fix misleading message in disk monitoring state
Allow single-provider node queries using -f
Disable pylint warnings about unused call variable
Remove code that was inadvertantly added too early
Merge pull request #9017 from techhat/nodequery

Allow single-provider node queries using -f
Grains detection for LXC and fix error in disk.usage under Docker

I have modified the core grains detection routines where dragons often lay, so this should be reviewed carefully.

I have elected to set the LXC detection inside virtual_subtype for account for cases wherein a user might be running inside VirtualBox (as the tutorial for Docker leads one to do). Moreover, I also allow the virtualization detection to continue after LXC is detected, as I believe it may even be possibly for Xen and LXC to co-exist. (Though, let's be honest -- probably not recommended!)

Finally, disk.usage now correctly fails with a warning message and includes a work-around for gathering disk usage under Docker containers. This refs #8976.
Keep pid of salt CLI command from showing in status.pid output

When status.pid is executed by the salt-minion instance running on the
master, it also returns the pid of the salt CLI command, because the
search string matches. This commit adds another grep to the ps/grep/awk
one-liner, which filters out lines matching 'status.pid'.